HD64F3672FPIV Renesas Electronics America, HD64F3672FPIV Datasheet - Page 62

• Manufacturer Part Number: HD64F3672FPIV
• Description: MCU 3/5V 16K I-TEMP PB-FREE 64-L
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of HD64F3672FPIV

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: SCI
• Peripherals: PWM, WDT
• Number Of I /o: 26
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• For Use With: R0K436079S000BE - KIT DEV FOR H8/36079 W/COMPILER
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 2 CPU
Bit manipulation for two registers assigned to the same address
Example: Bit manipulation for the timer load register and timer counter
(Applicable for timer B and timer C, not for the series of this LSI.)
Figure 2.13 shows an example of a timer in which two timer registers are assigned to the same
address. When a bit manipulation instruction accesses the timer load register and timer counter of
a reloadable timer, since these two registers share the same address, the following operations takes
place.
1. Data is read in byte units.
2. The CPU sets or resets the bit to be manipulated with the bit manipulation instruction.
3. The written data is written again in byte units to the timer load register.
The timer is counting, so the value read is not necessarily the same as the value in the timer load
register. As a result, bits other than the intended bit in the timer counter may be modified and the
modified value may be written to the timer load register.
Example 2: The BSET instruction is executed for port 5.
P57 and P56 are input pins, with a low-level signal input at P57 and a high-level signal input at
P56. P55 to P50 are output pins and output low-level signals. An example to output a high-level
signal at P50 with a BSET instruction is shown below.
Rev.4.00 Nov. 02, 2005 Page 36 of 304
REJ09B0143-0400
Figure 2.13 Example of Timer Configuration with Two Registers Allocated to Same
Count clock
Timer load register
Timer counter
Address
Reload
Read
Write
Internal bus